15645061120 has 104 divisors (see below), whose sum is σ = 40432217616. Its totient is φ = 5776539648.

The previous prime is 15645061079. The next prime is 15645061129. The reversal of 15645061120 is 2116054651.

It is a tau number, because it is divible by the number of its divisors (104).

It is not an unprimeable number, because it can be changed into a prime (15645061129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 236859 + ... + 295621.

Almost surely, 2^15645061120 is an apocalyptic number.

15645061120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15645061120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20216108808).

15645061120 is an abundant number, since it is smaller than the sum of its proper divisors (24787156496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

15645061120 is an equidigital number, since it uses as much as digits as its factorization.

15645061120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58805 (or 58783 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 31.

The spelling of 15645061120 in words is "fifteen billion, six hundred forty-five million, sixty-one thousand, one hundred twenty".